spf.active24.pl has no CNAME records.
Question and response
Question
dig spf.active24.pl. NS
Answer
The response has no answer records.
Authority
active24.pl. 600 SOA dns1.nano.pl. admin\@active24.pl. 2024020802 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0